Did you know that orange peels contain a powerful nutrient for treating heartburn? Have you ever wondered why you see so many TV commercials for heartburn medications such as Prilosec® and Tagamet®?It's because a startling 40% of the adult population suffers from either heartburn or a more serious condition known as gastro-esophageal reflux disease (GERD).If this sounds like you, and you're not into taking drugs, a safe and extremely effective option is d-limonene, a natural compound found in orange peels.